Here’s my entry for this month.
I wish I knew more about quantum computing, which explodes my mind, and means I also wish I knew more about matrices and complex probability. As far as I can see, testing it is a barrel of laughs / world of pain, because it seems that correct code will produce incorrect results some of the time - it’s all probability. So I wish I also knew more about significance levels and other stats things. https://randomtechthoughts.blog/2020/09/01/a-beginners-guide-to-practical-quantum-computing/